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Siemens HQR23B175H Molded Case Circuit Breaker
- 175A
- 3 Pole
- Bolt-On
Siemens
HQR23B175H
Molded Case Circuit Breaker
Brand
Siemens
SKU
HQR23B175H
Quantity
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Siemens HQR23B175H - 175A 3 Pole Molded Case Circuit Breaker
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Description
Part of the SENTRON QR frame series, the Siemens HQR23B175H provides robust overcurrent protection for commercial environments. This 3-pole, 175A breaker features a fixed thermal-magnetic trip unit. It bolts securely into Siemens P1, P2, and P3 panelboards or switchboards, and serves as a drop-in replacement for legacy HQJ23B175H breakers. Rated for an impressive 100 kAIC at 240VAC, this unit handles severe fault currents. It is HACR rated and supports reverse feed applications.Specifications
| Brand | Siemens |
|---|---|
| Series | HQR |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC |
| Frame Type | QR |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Enclosures |
| Wire Gauge | 3 AWG - 300 kcmil (Cu), 6 AWG - 350 kcmil (Al) |
| Max Wire | 350 kcmil |
| Min Wire | 3 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, Common Trip, Trip-Free Mechanism, Extra High Interrupting Capacity |
Product FAQs
7 answersWhich panelboards are compatible with the HQR23B175H breaker?
This bolt-on QR frame breaker is designed for installation in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards and enclosures.
What wire sizes do the lugs on the HQR23B175H accept?
The factory-installed load lugs accept 3 AWG to 300 kcmil copper wire or 6 AWG to 350 kcmil aluminum wire.
Can I use the HQR23B175H to replace an older HQJ23B175H breaker?
Yes, the HQR23B175H is the direct drop-in replacement for the legacy HQJ23B175H. Both are 175A, 3-pole, 240V bolt-on breakers with a 100kAIC rating, but the HQR utilizes the updated QR frame design.
What does the "H" at the end of the HQR23B175H catalog number signify?
The trailing "H" indicates an extra-high interrupting capacity of 100kAIC at 240V. Standard HQR breakers without the trailing "H" are rated for 65kAIC.
Is the HQR23B175H suitable for reverse feed applications?
Yes, this thermal-magnetic breaker is HACR rated and supports reverse feeding, meaning it can be back-fed in compatible panelboards without issue.
Can I adjust the trip settings on the HQR23B175H?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous (LI) protection that cannot be field-adjusted.
Does the HQR23B175H provide ground fault or arc fault protection?
No, this is a standard thermal-magnetic breaker designed for overload and short-circuit protection. It does not include GFCI or AFCI circuitry.
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